The phrase "a new cusp" is correct and usable in written English.
It can be used to describe a new point of change or transition, often in a metaphorical sense, such as in personal development or societal shifts.
Example: "As we enter this new era of technology, we find ourselves at a new cusp of innovation and creativity."
Alternatives: "a new threshold" or "a new turning point."
The significance of Carabelli cusp for evolutionary biology is that it provides a well-documented glimpse at the origin of a new cusp.
It is rarely possible to study population-level variation in the early evolutionary stages of the origin of a new cusp in extinct species.
Most importantly, however, this system recognizes the dynamic, and often disparate, developmental processes that may lead to the appearance of a new cusp.
Small differences in the spacing of enamel knots and the timing of the cessation of morphogenesis most likely determine the probability of forming a new cusp both within and across individuals.
As the distance from a preexisting enamel knot increases, the likelihood of escaping the inhibition field surrounding that enamel knot increases, which may result in the formation of a new enamel knot, and thus a new cusp.
However, origin of a new cusp in the first place, to use Carabelli expression as a model, can occur as a byproduct of natural variation in the spacing of enamel knots and offset of morphogenesis, which impacts intercusp spacing and tooth size.
Within this context, the lagomorph central cusp has been particularly difficult to homologize with other tribosphenic cusps; authors have previously considered it the paracone, protocone, metacone, amphicone, or an entirely new cusp.
The Cheese Truck (a mobile offshoot of Caseus, a New Haven cheese shop and bistro) and Cheeseboy's Grilled Cheese to Go in the Connecticut Post Mall in nearby Milford seem to be riding the cusp of a new minitrend in the New Haven area: grilled cheese on the run.
This need for corporate responsibility, or connected capitalism as it was termed by Neville Isdell, former CEO of Coca-Cola Co., speaks profoundly to a new generation on the cusp of real-world careers.
Balancing on the cusp of a new millennium, the show, It Was a New Century: Reflections on Modern America, brings in distinct creatives from the epoch, including George Bellows, Childe Hassam, Winslow Homer, and Maurice Prendergast.
"We are on the cusp of a new day in Newark," said Lawrence P. Goldman, the president and chief executive of the New Jersey Performing Arts Center, the festival's main stage.
